TY  - CONF
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Spinzl, Georg
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/16294
AB  - Currently, more than 1.5 billion people (nearly 20% of the world population) are living with hearing loss. By 2050, nearly 2.5 billion people are projected to have some degree of hearing loss and at least 700 million will require hearing rehabilitation. While conventional hearing aids greatly improve the lives of people with hearing difficulties, they cause problems by being worn externally (e.g. stigma, bathing). We present here an innovative implantable hearing aid microphone that, when combined with a cochlear implant, could represent a fully internal hearing aid. To achieve an internal microphone, our technology utilizes a novel fiber-optic approach. The fiber-optic sensor is a kind of an optical vibrometer aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor is invisible as it is placed inside the human middle ear and is capable to detect the amplitude of the incus vibrations over the range of few picometers to a couple of nanometers, which corresponds to an SPL of about 35 to 90 dB. The basic operation principle is high-coherence fiber-optic interferometry. Online signal processing allows permanent conversion of the acoustical into an electrical signal over the audio frequency range from 100 Hz to 8 kHz in real time.
PB  - BIT Group Global
C3  - The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan
T1  - Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)
UR  - https://hdl.handle.net/21.15107/rcub_dais_16294
ER  - 

@conference{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Spinzl, Georg",
year = "2023",
abstract = "Currently, more than 1.5 billion people (nearly 20% of the world population) are living with hearing loss. By 2050, nearly 2.5 billion people are projected to have some degree of hearing loss and at least 700 million will require hearing rehabilitation. While conventional hearing aids greatly improve the lives of people with hearing difficulties, they cause problems by being worn externally (e.g. stigma, bathing). We present here an innovative implantable hearing aid microphone that, when combined with a cochlear implant, could represent a fully internal hearing aid. To achieve an internal microphone, our technology utilizes a novel fiber-optic approach. The fiber-optic sensor is a kind of an optical vibrometer aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor is invisible as it is placed inside the human middle ear and is capable to detect the amplitude of the incus vibrations over the range of few picometers to a couple of nanometers, which corresponds to an SPL of about 35 to 90 dB. The basic operation principle is high-coherence fiber-optic interferometry. Online signal processing allows permanent conversion of the acoustical into an electrical signal over the audio frequency range from 100 Hz to 8 kHz in real time.",
publisher = "BIT Group Global",
journal = "The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan",
title = "Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)",
url = "https://hdl.handle.net/21.15107/rcub_dais_16294"
}

Đinović, Z., Pavelka, R., Tomić, M.,& Spinzl, G.. (2023). Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA). in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan
BIT Group Global..
https://hdl.handle.net/21.15107/rcub_dais_16294

Đinović Z, Pavelka R, Tomić M, Spinzl G. Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA). in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_16294 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Spinzl, Georg, "Totally Implantable Fiber-Optic Sensing System (TIFOS) - A Step Toward Totally Implantable Hearing Aids (TIHA)" in The 9th Annual World Congress of Advanced Materials-2023, May 08-10, 2023, Tokyo, Japan (2023),
https://hdl.handle.net/21.15107/rcub_dais_16294 .

TY  - DATA
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12260
AB  - In the supplement, a few audio records in a time duration of about 1-3 min, which are acquired during experiments performed on skull head #7587, are given. The signals have been on-line processed by TIFOS system and recorded by an HP notebook audiocard without any frequency equalizing. The sound pressure level was measured by Bruel & Kjaer 2250 sound meter (dBA, slow). The sound of piano and violin in Schubert’s Rondo in Fig. S1a are of high fidelity. High frequency tones in the aria from “La-Traviata” performed by famous Russian-Austrian operatic soprano Anna Netrebko (Fig. S1d) are also very clear and dynamic. The famous speech of Martin Luther King (Fig. S1b) is completely intelligible, as well as the resignation speech of former British prime minister Theresa May (Fig. S1c). The individual characteristics of the well-known voices are easily recognizable.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351
VL  - 410
UR  - https://hdl.handle.net/21.15107/rcub_dais_12260
ER  - 

@misc{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In the supplement, a few audio records in a time duration of about 1-3 min, which are acquired during experiments performed on skull head #7587, are given. The signals have been on-line processed by TIFOS system and recorded by an HP notebook audiocard without any frequency equalizing. The sound pressure level was measured by Bruel & Kjaer 2250 sound meter (dBA, slow). The sound of piano and violin in Schubert’s Rondo in Fig. S1a are of high fidelity. High frequency tones in the aria from “La-Traviata” performed by famous Russian-Austrian operatic soprano Anna Netrebko (Fig. S1d) are also very clear and dynamic. The famous speech of Martin Luther King (Fig. S1b) is completely intelligible, as well as the resignation speech of former British prime minister Theresa May (Fig. S1c). The individual characteristics of the well-known voices are easily recognizable.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351",
volume = "410",
url = "https://hdl.handle.net/21.15107/rcub_dais_12260"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351. in Hearing Research
Elsevier BV., 410.
https://hdl.handle.net/21.15107/rcub_dais_12260

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351. in Hearing Research. 2021;410.
https://hdl.handle.net/21.15107/rcub_dais_12260 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Supplementary information for the article: Djinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G., & Traxler, H. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. Hearing Research, 410, 108351. https://doi.org/10.1016/j.heares.2021.108351" in Hearing Research, 410 (2021),
https://hdl.handle.net/21.15107/rcub_dais_12260 .

TY  - JOUR
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12259
AB  - In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Experimental study of an implantable fiber-optic microphone on human cadavers
SP  - 108351
SP  - 108351
VL  - 410
DO  - 10.1016/j.heares.2021.108351
UR  - https://hdl.handle.net/21.15107/rcub_dais_12259
ER  - 

@article{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Experimental study of an implantable fiber-optic microphone on human cadavers",
pages = "108351-108351",
volume = "410",
doi = "10.1016/j.heares.2021.108351",
url = "https://hdl.handle.net/21.15107/rcub_dais_12259"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research
Elsevier BV., 410, 108351.
https://doi.org/10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12259

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research. 2021;410:108351.
doi:10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12259 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Experimental study of an implantable fiber-optic microphone on human cadavers" in Hearing Research, 410 (2021):108351,
https://doi.org/10.1016/j.heares.2021.108351 .,
https://hdl.handle.net/21.15107/rcub_dais_12259 .

TY  - JOUR
AU  - Đinović, Zoran
AU  - Pavelka, Robert
AU  - Tomić, Miloš
AU  - Sprinzl, Georg
AU  - Müller, Julia Gertrud
AU  - Traxler, Hannes
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12143
AB  - In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.
PB  - Elsevier BV
T2  - Hearing Research
T1  - Experimental study of an implantable fiber-optic microphone on human cadavers
SP  - 108351
VL  - 410
DO  - 10.1016/j.heares.2021.108351
UR  - https://hdl.handle.net/21.15107/rcub_dais_12143
ER  - 

@article{
author = "Đinović, Zoran and Pavelka, Robert and Tomić, Miloš and Sprinzl, Georg and Müller, Julia Gertrud and Traxler, Hannes",
year = "2021",
abstract = "In this paper, we present the results of an experimental study about a novel fiber optical vibrometer, aimed to be used as a totally implantable fiber-optic microphone for hearing aids. The sensor head, implanted inside the human cadaver middle ear, detects the amplitude of the incus vibrations, which are produced by an external acoustical source. The probe beam of coherent vertical cavity surface emitting laser (VCSEL) radiation is directed to the incus and the phase-modulated reflected beam is captured and demodulated. The problem of interferometric fading was solved using two quasi-quadrature signals, passively produced by the 3 × 3 single-mode fiber-optic coupler, processed by a special embedded algorithm. The implanted optoelectronic module works with very low-power consumption, performs real-time signal processing and outputs an analogue signal proportional to the incus vibration. The amplitude of the incus vibrations at different sound pressure levels (SPL) from 40 to 90 dB and at frequencies from 100 Hz to 10 kHz were measured by the implanted system. The system was evaluated on five cadaver skulls. The measured amplitudes were in the range of 1 pm to 5 nm, depending on the subjected skull and the applied sound pressure.",
publisher = "Elsevier BV",
journal = "Hearing Research",
title = "Experimental study of an implantable fiber-optic microphone on human cadavers",
pages = "108351",
volume = "410",
doi = "10.1016/j.heares.2021.108351",
url = "https://hdl.handle.net/21.15107/rcub_dais_12143"
}

Đinović, Z., Pavelka, R., Tomić, M., Sprinzl, G., Müller, J. G.,& Traxler, H.. (2021). Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research
Elsevier BV., 410, 108351.
https://doi.org/10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12143

Đinović Z, Pavelka R, Tomić M, Sprinzl G, Müller JG, Traxler H. Experimental study of an implantable fiber-optic microphone on human cadavers. in Hearing Research. 2021;410:108351.
doi:10.1016/j.heares.2021.108351
https://hdl.handle.net/21.15107/rcub_dais_12143 .

Đinović, Zoran, Pavelka, Robert, Tomić, Miloš, Sprinzl, Georg, Müller, Julia Gertrud, Traxler, Hannes, "Experimental study of an implantable fiber-optic microphone on human cadavers" in Hearing Research, 410 (2021):108351,
https://doi.org/10.1016/j.heares.2021.108351 .,
https://hdl.handle.net/21.15107/rcub_dais_12143 .